Power train

Question 1

Which transmissions do not have an auxiliary lubrication system?

Answer 1

Engine XMSN

Question 2

How can you identify low oil pressure in the aft vertical shaft?

Answer 2

AFT SHAFT PRESS LO Caution

Maintenance Panel (Confirm with FE) and Caution on WCA

Question 3

What indication will the crew have when a debris screen is bridged with conductive
particles?

Answer 3

Debris indication on EICAS, Maintenance Panel, and WCA

Question 4

The ______________________lubrication system lubricates the main generators?

Answer 4

AFT XMSN Main lubrication system

Question 5

What should you do if you find an engine or combining transmission oil quantity indication low and the aircraft has been shut down for more than 30 minutes?

Answer 5

5 min GND Test then recheck

Question 6

What is the purpose of the 9 and 4 degree tilt in the aft and forward transmissions?

Answer 6

Aids in Ground Handling and Ground Taxiing

Question 7

What is the location of the temperature/thermal switch that turns on the ENG1 or ENG2 XMSN warning?

Answer 7

Bottom of ENG XMSN, next to chip detector (ENG XMSN Thermoswitch)

Question 8

The fluid levels in the combining and engine transmission should be checked within
________minutes after engine shutdown?

Answer 8

30

Question 9

Why must you reduce the electrical load if the AFT XMSN OIL HOT caution light is active?

Answer 9

Aft XMSN main lube cools Generators

Question 10

What will happen if the maintenance panel is tested in-flight?

Answer 10

Same as on Ground, Everything will light up

Question 11

What is the emergency procedure for the ENG1 or ENG2 XMSN warning is active?

Answer 11

EMER ENG SHUTDOWN

Affected ENG XMSN Check

Land as soon as possible

Question 12

How many synchronizing drive shafts are installed on the CH-47F?

Answer 12

9 (7 forward, 2 aft)

Question 13

What is the emergency procedure if the AFT XMSN OIL HOT caution is active?

Answer 13

LAND AS SOON AS POSSIBLE

Electrical load - Reduce (as much as possible)

Question 14

What is the emergency procedure if the ENG1 or ENG2 XMSN PRESS LO caution is active and power is required for flight?

Answer 14

LAND AS SOON AS POSSIBLE

Question 15

Exceeding VNE with the LCT retracted places excessive stress on what component?

Answer 15

Thrust Bearing (in aft shaft)

Aft vertical shaft!!!

Question 16

What is the emergency procedure if only the XMSN AUX PRESS LO caution is active and main oil pressures and temperatures are normal?

Answer 16

Land as soon as practicable

Question 17

What is the emergency procedure if the (FWD, COMB, or AFT) XMSN PRESS LO and XMSN AUX PRESS LO cautions are active and the XMSN AUX PRESS LO caution is from the same transmission?

Answer 17

Land as soon as possible

Question 18

What items in the drive-train system allows the shaft assemblies to flex?

Answer 18

Flex coupling assembly

Flexible Coupling Plates (multiple layers), which makes them flexible and strong

Question 19

What is the emergency procedure if the AFT XMSN CHIP caution is active?

Answer 19

Land as soon as possible

Question 20

What action should you take if the XMSN DEBRIS caution is active latch for the forward transmission and cannot be reset?

Answer 20

Land as soon as possible

Question 21

What reduces vibration between drive shafts and aircraft?

Answer 21

Elastomer shock mounts (LORD Mounts)

Question 22

What is the emergency procedure the pilots must accomplish if the LH or RH COMB
DEBRIS caution is active?

Answer 22

RGT- Reset, LASAP if it stays on or comes back on

Question 23

Type of shaft between the engine and engine xmsn?

Answer 23

quill shaft